Carbureter.



No. 885,545. y kPATNTED MAY 5, 1908.

' G. M. 'SCHEBLBR GARBURETER.

APPLIGTION FILED MAY'Z'?, 1907.

SHEETS-5mm' 1.

Izq/L91. 45 44 No. 886,545'. PATENTBD MM5, 1908. f G. M. SGHBBLER.

GARBURBTBR.

APPLIGATION FILED MAY 27, 1907.

v4 SHEETS-snm 2.

www m G. M. SGHEBLBR.

GARBURETER. APPLICATION FILED MAY 27, 1907.

4 SHEETS-SHEET 3.

PATBNTED MAY 5, 1308.

G, M. SGHBBLER.

GARBURETER. A

APPLICATION FILED lMAY 27, 1907.

`4 sHrETs-SHEET 4.

Qvilncaaco narran sra'rns Parana erstes.

GEORGE M. scHEBLER, oF inDiANAioLi-s, INDIANA. 1

CARBURETEB.

Application filed. Hay 27, 1907. Serial No. 375,964.

To all ,whom 'it may concern.'

Be it knovm that I, Gnocca M. ScnEBLEn, a citizen of the United States,'residing at Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in (larb'ureters, of which the following is a specification.

The object of my invention is to produce a carbureter, especially 'designed for use -in connection with internal combustion' engines, the construction being'such that the iiuel admission valve will be automatically shifted in accordance witli'the exact requirements at any particular time and also'such that the extent of such automatic adjust ment and therelation thereof to the air supply will be readily adjustable.

A further object of my invention is to provide suoli improvements infiletails of construction as will be hereafter pointed out.

The accompanying drawings illustrate my invention Figure 1 is an elevation in partial vertical section ot a carbureter embodying my improvement; Fig. 2 a plan; Fig. 3 a section.

on line 3-3 'of Fig. 2; Fig. 4 a detail of moans for adjusting and regulating the auto'- inatic manipulation ot' the'fuel valve; iFigli a detail on line 5 5 of Fig. 4; Fig. 6 an elevation in partial vertical section of a modified forni; Fig. 7 a section on line 7 7 of Fig. 6: Fig. Sa detail elevation of another modification, Fig. 9' a` section on line 2 9 of Fig. 8, and Fig. 1() an elevation, in partial section, of another modification. l,

'In the drawings, A1t) indicates a suitable reservoir having the usual iioat- 11 therein,

said float operating through a lever 12 upon a valve 13 which controlsthe fuel in that passage 14. Passing through reservoir is an air tube 15 which is restricted at a point 1'6 at about the normal level of liquid in reservoir 10. Projected through the wall of tube 15 is a nozzle 17 having a passage 18 therethrough, said passage forming a communica'- tion between reservoir 1U and tube 15, the inner endof the nozzle being substantially at the point of restriction in tube 15,and provided at its inner end with a valve seat 19 adapted to receive needle valve .20 which is Inormally held outwardl by a light spring 21.

Threaded upon the outer end of the stein of the needle valve 2() is an adjusting head `22 which is supported in one arm 0 a lever 23. Lever 23 is provided at one end with a vtrack 24 adapted to recciveia roller 25 carriedslayv l lSpe-cijication of Letters Patent.

an arm 26, said arm also carrying a roller 27.

independently, the track 28 may be given' any desired shape so that the passa-ge oi' rollers 25 and. 27 between tracks 24 and 28 will variously affect lever 23 and ,consequently valve 2() at different points in the'movernent of arm 26. in order to automatically operate arm 26 I provide alever 32 0ne arm of. which is connected to arm 26 while the otherV Fatented May 5, 1908.

arm is connected by a'link 33 with the stem 34 oi the main air inlet valve 35. rihis air inlet valve 35 lies in vthesupplementary air passage 36 which communicates with the upper end of the air tube 15 above the inlet nozzle 17 but below the usual throttle valve 37. VIn order to dampen the action ofthe valve 3'5 l deem it' advisable to provide a dash-pot danipencr which in'Fig. 1 is shownI as consisting of a'cylinde'r 37 supported beneath valve ,35 and having within it a iston.38 attached to the .valve stein 34, a lig it spring 39 bein provided to normally close the valve 35am said s ring being-provided with an adjustable a' u tment 4() in the usual manner.

Arranged in passage 36 outside of valve 35, on the air side, I provide a throttle'valve 41 whichis adapted .to practically coin letely close passage 36. Connecting wit the 'iower end of tube 15 is an air tube 45, being conveniently connected by means of a union 46, and this air tube is extended up alongside the sppleniental air tube 36 so that the shait 42 ot valve 41 may bextended through the walls oi' Ypassage. 36V and through the walls of tube 45 so. as to support valve 43 within tube 45 said valve, however, being somewhat smaller than tube 45 so that, when valve 41 is in its closed p'osition, valve 43 will still permit a limited flow of air throu h tube 45 into tube 15, Shaft 42 is provided with aA suitable operating lever 44 which maybe provided with a link (not shown) extended to a point convenient ot access.

.- Inop'eration valve 2() is' so adjusted that, in the position shown in Figi 1, air sucked i through the apparatus past valve Li3 wili l v segment 55 maybe shifted bodily with reltj speed; the suction upon valve 35, will causeit 'to leave its seat and, when it leaves its seat,

- and provided on its inner end with an arm 51 eccentric to the pivot point of segment 55 so 'segment 55 and the lexible track 52S", in# stead ol being parallel with the axis of lever' 'ver 63.

produce a proper mixture. Valves 41 and j 43 are-then opened, as is also the. throttle valve 37, and, as the .engine increases in it will operate through link 33 and lever 3 2 u pniarm 26so as to drive rollers 25 and '27 bett een tracks 24 and 28, thus causing the arm 23 to swing so as to automatically move valve 2() toward and from its seat 19, vas the conditions may. 're uire, to automatically regulate the flow o fuel to the air stream passing through tube 15. By experiment, the .various screws 31 may beadjusted ,so that track 28 will be given suoli form as that the valve 20 will be roperly manipulated by the movement of -Va'iire 35. ln the modification shown in 'Fig 6*, the dash-pot 37 is arranged above the main body of the carbureterand, therefore, thevaive stem 34 ot valve 35 is reversed. In this form .the bell crank 32 is eliminated and instead. a shaft is-,.journa`led in the casing having a roller 52 adapted to coo ierate with valve 35 while at its outer end tie lshaft 50 is provided with an arm 53 which 'is connected by a linl `54 with a swinging segment 55, This segnientds rovided at one end with a pin 56 while att e other end is an ec-'- centric 57 which is rotatably adjustable on arm 55. Hooked over pin 56 is one end of a flexible track 58, the opposite end being hooked over thev eccentric 57. At interme diate pointstrack 58 is connected to adjusting screws 31 similar to the adjusting screws 31 so that the said track may be flexed by vsaid screws so as to be brought into any desired form, the relative'adjustment ot the eccentric 57 assisting in this adjustment. in order to provide for further adjustment I pivot the segment upon a swinging arm 59 having a finger '60 adapted to engage Va roughened segmentl so as to be held in any desired position of ad'ustment. As indicated iii dotted lines in ig. 6 the pivot su iport 591 of arm 59 on the casing is slightly cause roller 78 to move i illustration.

that, by swinging arm 59 upon its pivot, the

tion to a roller 62carried by a lever 63 adapted to engage the outer end ol" the needle va ve 20'- whicli is siniilarto the' needle valve 20.`

In the inodilication shown in Figs. S and 9 the segment dill'ers slightly in lorin from 55, is in a plane substantially at right angles to said axis, said track 58 being adjustable7 at various points in its length by adjusting screws 3l carried by the segment 55. rlhe flexible track 5S is adapted to engage a roller (32 carried by'alever (i similar to leaasss vDitlicu'ity might be experiencedin adjust ing the liexible track shown in Figs. o to Q inelusive andV a construction such as is shown in Fig. 10 may be adopted. In this l'oi'ni provide, within the main casing, an arm 7() aving a roller 7l at its lree end, Jwhich roller is adapted to be engaged by the air inlet valve 35. firm 7() is attached to a shaft 7i journaled in the main casing and said shaft 'is provided. atits outer end with a pair of arms72 and 73.

rthat end', `carries roller 76 ada )led to engage the flexible track 77. l portediat each end by an singularly adjustable eccentric 7S and at intermediate points `is connected to the inner ends of ad'usting screws 79. 1 rlhe vopposite end of lin 75 is connected to ene arm of 'the lever 80, the other arm of said lever being connected to the valve stem S1, said valve stem being similar to the valve stein 2() in Fig. and nor; mally urged outward by alight spring in the same way as spring 21, the arrangement bein such that said spring (not shown in Fig. 10 serves to hold roller 76 into engagement with the track 7 7. nected to arm 72, serves to hold the roller end oflink 75 inl its normal upper position,.

lthe arrangement being such that, when valve 35 o ens by reason of the vacuum established in t ie casing, it will act u ion roller 71 to lownward along track 79, said track being adjusted to such Vshape as to produce the desired positioning of t ie valve stem 81 for any given position of the valve 35. It is to be understood that the shapes of the flexible track, shown in the drawings, are exaggerated for clcarness 'ol" .l claim as my invention: i. ln a carburetor, the combination, with the casing, having an air passage, ariuel Arm 73 is connected by a; hnk 74. with one end olv a link 75 which, at'

Trac i 77 is supnozzle in communication with said passage,

and a fuel valve cooperating with said nozrAle, of 'air automatic spring-controlled air valve, a movable member coacting with the said fuel valve .for moving the same, inter mediate connections between said 'movable member andthe air valve, and 'means co operating with said intermediate connections, whereby the effect of the said movable ineniber'upon the fuel valve Iis varied at various points in the stroke of s'aid movable member.

2. ln a carburetor, the combination, with the casing, having a mixture passage, a pri` vmary an'` passage communicating with the mixture passage, a fuel nozzle communicating with the primary air passage, a fuel valve cooperating with said nozzle, and a secondary air passage. communicating with the mixture passage, et a' pair of valves, one

mounted in the secondary air passage and adapted to substantially closer the same, and 

